September in Tbilisi averages highs of 25 °C (76 °F) and lows of 15 °C (59 °F), with about 5 rainy days and 12 h 25 min of daylight.
September weather in Tbilisi at a glance
average high to low each dot ≈ 3 rainy days
Is September a good time to visit Tbilisi?
Good time to go: comfortably warm and some rain. September is usually high season in Tbilisi: book rooms early, as prices are typically at their highest.
Our rule: a month scores 2 points for comfortable average highs of 18–28 °C (1 point for 14–18 or 28–32 °C) and 2 points for 5 or fewer rainy days (1 point for 6–10). Average highs above 35 °C or below 8 °C make it a tough month whatever the rain. A rainy day here means 2 mm of rain or more. 4 points = great, 3 = good, 2 = mixed, 0–1 = tough.
Holidays and events in September 2026
No public holidays fall in September 2026 in Georgia, so opening hours should be normal.
Things to do in Tbilisi in September
September's weather suits a mix of outdoor sights and museums, so the open-air ones come first.
- Narikala Fortress — cable car up outdoors
- Rustaveli Avenue outdoors
- Mtskheta day trip — UNESCO churches outdoors
- Old Town and the sulphur baths — Abanotubani indoors
- Georgian National Museum indoors
- Fabrika — a Soviet factory turned hub indoors
Where to stay: Old Tbilisi and Sololaki for character; Vake or Vera for cafés.
What to pack for Tbilisi in September
- Light layers for the day.
- Comfortable walking shoes.
What a day in Tbilisi costs
| Budget traveller | Mid-range | |
|---|---|---|
| Typical total per person, per day | €25–60 | €70–170 |
Excluding flights. September is usually high season in Tbilisi: book rooms early, as prices are typically at their highest.
September in nearby cities
| City | High / low | Rainy days | Verdict |
|---|---|---|---|
| Istanbul | 26° / 18° | 6 | Good time to go |
| Petra | 30° / 20° | 0 | Good time to go |
| Santorini | 26° / 21° | 0 | Great time to go |
Want the whole trip planned? Join the Journey waitlist: tell it where, when and your budget, and it plans every day hour by hour.
FAQ
Is September a good time to visit Tbilisi?
By the numbers, September is a good time to go: comfortably warm and some rain, with average highs of 25 °C (76 °F) and about 5 rainy days. September is usually high season in Tbilisi: book rooms early, as prices are typically at their highest. The best months for weather are June, August, September.
How warm is Tbilisi in September?
Average highs are 25 °C (76 °F) and lows 15 °C (59 °F) (2015–2024 averages).
Does it rain a lot in Tbilisi in September?
Expect about 5 days with 2 mm of rain or more, about 50 mm in total. It is the 6th driest month of the year in Tbilisi.
Sources: climate averages from Open-Meteo historical weather (ERA5 reanalysis, 2015–2024); sea temperatures from the Open-Meteo marine API (2023–2024); public holidays from Nager.Date. Daylight is calculated for the 15th of the month. Averages are a guide, not a forecast. Costs are typical ranges per person per day, excluding flights.